I use the app 'Autodesk sketchbook pro' on a tablet. It costs about £5 (sorry if this is not your currency)You so swag. If i even atempted to do these i would most likely stab myself in the eye (on purpose). What do you use to draw these? Or computer?
But there is a free version -. It doesn't have as many layers( used to erase colour or lines without effecting other parts).
Lots of different effects and brushes that offer control over radius of the brush and opacity.
Thanks for allowing us to meet here!
Long time no see!